A local proton source in a [Mn(bpy-R)(CO)3Br]-type redox catalyst enables CO2 reduction even in the absence of Brønsted acids†,10.1039/C4CC05563B

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A local proton source in a [Mn(bpy-R)(CO)3Br]-type redox catalyst enables CO2 reduction even in the absence of Brønsted acids†

Federico Franco,Claudio Cometto,Federico Ferrero Vallana,Fabrizio Sordello,Emanuele Priola,Claudio Minero,Carlo Nervi,Roberto Gobetto

Chemical Communications Pub Date : 10/07/2014 00:00:00 , DOI:10.1039/C4CC05563B

Abstract

The effect of a local proton source on the activity of a bromotricarbonyl Mn redox catalyst for CO₂ reduction has been investigated. The electrochemical behaviour of the novel complex [fac-Mn(dhbpy)(CO)₃Br] (dhbpy = 4-phenyl-6-(1,3-dihydroxybenzen-2-yl) 2,2′-bipyridine), containing two acidic OH groups in the proximity of the metal centre, under a CO₂ atmosphere showed a sustained catalysis in homogeneous solution even in the absence of Brønsted acids.